Add-on sunvisor



FIG. 1 is a front, top and side perspective view of the add-on sunvisor showing my new design;

FIG. 2 is a front elevational view thereof, the rear being a mirror image of the front shown in FIG. 2;

FIG. 3 is an end elevational view thereof;

FIG. 4 is an end elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for an add-on sunvisor, as shown. 